Can I show each shopper the products they looked at recently?

Yes. Add the Recently Viewed section (in the products category under + Add).

Each shopper sees their own recently viewed products. A shopper who hasn't viewed anything yet doesn't see the section at all, so you won't get an empty box on the home page.

Settings on the Content tab:

• Heading
• Number of items
• Layout: Grid or Slider
• Items per Row

For Slider there are also Show Arrows, Show Dots and Auto Slide on the Style tab.

Click Save when done. There is also a Recommended for You section if you want suggestions as well.